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13230212031 = 36194720323
BaseRepresentation
bin11000101001001010…
…10000001110111111
31021011000222102000000
430110211100032333
5204043413241111
610024453205343
7645566642511
oct142445201677
937130872000
1013230212031
11567a123133
122692930853
13132aca663a
148d7173bb1
15526777c56
hex3149503bf

13230212031 has 56 divisors (see below), whose sum is σ = 21325566720. Its totient is φ = 8177735376.

The previous prime is 13230212011. The next prime is 13230212071. The reversal of 13230212031 is 13021203231.

13230212031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13230212031 - 219 = 13229687743 is a prime.

It is a super-2 number, since 2×132302120312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13230211995 and 13230212013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230212011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 640836 + ... + 661158.

Almost surely, 213230212031 is an apocalyptic number.

13230212031 is a deficient number, since it is larger than the sum of its proper divisors (8095354689).

13230212031 is an equidigital number, since it uses as much as digits as its factorization.

13230212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20407 (or 20392 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13230212031 its reverse (13021203231), we get a palindrome (26251415262).

The spelling of 13230212031 in words is "thirteen billion, two hundred thirty million, two hundred twelve thousand, thirty-one".

Divisors: 1 3 9 19 27 47 57 81 141 171 243 423 513 729 893 1269 1539 2679 3807 4617 8037 11421 13851 20323 24111 34263 60969 72333 182907 216999 386137 548721 650997 955181 1158411 1646163 2865543 3475233 4938489 8596629 10425699 14815467 18148439 25789887 31277097 54445317 77369661 93831291 163335951 232108983 281493873 490007853 696326949 1470023559 4410070677 13230212031